CN101635827B - Method for realizing carousel channels, media control server and carousel channel system - Google Patents
Method for realizing carousel channels, media control server and carousel channel system Download PDFInfo
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- CN101635827B CN101635827B CN 200910090581 CN200910090581A CN101635827B CN 101635827 B CN101635827 B CN 101635827B CN 200910090581 CN200910090581 CN 200910090581 CN 200910090581 A CN200910090581 A CN 200910090581A CN 101635827 B CN101635827 B CN 101635827B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47208—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting near-video-on-demand content
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention provides a method for realizing carousel channels, a media control server and a carousel channel system, which relate to the field of carousel channels and solve the problem that carousel channels are only switched among programs with the same type in the prior art. The method comprises the following steps: acquiring the play start time and the type of a next program by the media control server; and switching programs by the media control server according to the type of the next program when reaching the play start time of the next program. The media control server comprises an acquire unit and a switch unit, wherein the acquire unit is used for acquiring the play start time and the type of the next program; and the switch unit is used for switching programs according to thetype of the next program when reaching the play start time of the next program. The invention can diversify the programs of carousel channels.
Description
Technical field
The present invention relates to wheel and broadcast the channel field, refer to that especially a kind of implementation method, media control server and wheel of broadcasting channel of taking turns broadcast channel system.
Background technology
Present IPTV (Internet Protocol Television, IPTV) in the system, NVOD (Near Video On Demand, wheel is broadcast) be a kind of important content play form, be that same set of program adopts a plurality of channels to play with certain hour interval (for example 10 minutes), the user by selecting different channel reaches VOD (Video On Demand, the video request program) effect of forward-reverse.This business also is the improved form of traditional live broadcast service, is between program request and live a kind of broadcast mode, is particularly suitable for the broadcast of popular new film and the report of focus incident, in the hope of at short notice, effectively shunts professional and the expansion service ability.Wheel is broadcast channel is mainly play appointment according to the program displaying schedule program, and the program displaying schedule can have many to play program plan.At present, the program displaying schedule issues programme content and only relates to the VOD program, and wheel is broadcast channel and only switched between the VOD content.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of implementation method, media control server and wheel of broadcasting channel of taking turns and broadcasts channel system, can switch between dissimilar programs.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme as follows:
On the one hand, provide a kind of implementation method of broadcasting channel of taking turns, comprising:
Media control server is obtained the play start time of next program and the type of described next program;
Described media control server when the play start time of described next program arrives, is carried out the switching of program according to the type of described next program.
When the type of described next program was media file, described media control server was according to the type of described next program, and when the play start time of described next program arrived, the step of carrying out the switching of program was:
Described media control server issues first order to the media store server at described next program place, make described media store server open the media file of described next program in the play start time of described next program, and the media file of described next program is sent to the media distribution service device.
When the type of described next program was the direct broadcast band program, described media control server was according to the type of described next program, and when the play start time of described next program arrived, the step of carrying out the switching of program was:
Described media control server issues second order to the live code stream Distributor at described next program place, makes described live code stream Distributor that the direct broadcast band program of described next program is sent to the media distribution service device.
Described media control server is according to the type of described next program, when the play start time of described next program arrives, carries out also comprising before the step of switching of program:
Described media control server checks whether the channel state of described next program is normal.
The described implementation method of broadcasting channel of taking turns also comprises:
Described media control server discharges current program according to the type of current program.
When the type of described current program was media file, described media control server was according to the type of current program, and the step that discharges current program is:
Described media control server issues the 3rd order to the media store server at described current program place, makes described media store server close the media file of described current program.
When the type of described current program was the direct broadcast band program, described media control server was according to the type of current program, and the step that discharges current program is:
Described media control server issues the 4th order to the live code stream Distributor at described current program place, makes described live code stream Distributor stop to send to described media distribution service device the direct broadcast band program of described current program.
On the other hand, provide a kind of media control server, comprising:
Acquiring unit is used for obtaining the play start time of next program and the type of described next program;
Switch unit is used for the type according to described next program, when the play start time of described next program arrives, carries out the switching of program.
Described media control server also comprises:
Releasing unit is used for the type according to current program, discharges current program.
On the other hand, provide a kind of the wheel to broadcast channel system, comprising: media control server, media store server, live code stream Distributor and media distribution service device;
When the type of described next program is media file, described media control server issues first order to the media store server at described next program place, make described media store server open the media file of described next program in the play start time of described next program, and the media file of described next program is sent to described media distribution service device;
When the type of described next program is the direct broadcast band program, described media control server issues second order to the live code stream Distributor at described next program place, makes described live code stream Distributor that the direct broadcast band program of described next program is sent to described media distribution service device.
Embodiments of the invention have following beneficial effect:
In the such scheme, media control server is carried out the switching of program according to the type of current program and the type of described next program, therefore can realize the switching between the different program categories, makes that the type of broadcast program is abundanter.
Description of drawings
Fig. 1 is schematic flow sheet of taking turns the implementation method of broadcasting channel of the present invention;
Fig. 2 is the structural representation of media control server of the present invention;
Fig. 3 is the structural representation of broadcasting channel system of taking turns of the present invention;
Fig. 4 broadcasts the structural representation of channel system for wheel in the application scenarios of the present invention;
Fig. 5 broadcasts the schematic flow sheet that channel creation is handled for wheel in the application scenarios of the present invention;
Fig. 6 is the schematic flow sheet of program displaying schedule management method in the application scenarios of the present invention;
Fig. 7 is the switching flow figure from first file to second file in the application scenarios of the present invention;
Fig. 8 is the switching flow figure from the file to the direct broadcast band in the application scenarios of the present invention;
Fig. 9 is the switching flow figure from the direct broadcast band to the file in the application scenarios among the present invention;
Figure 10 is the switching flow figure from first direct broadcast band to second direct broadcast band in the application scenarios of the present invention.
Embodiment
For technical problem, technical scheme and advantage that embodiments of the invention will be solved is clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Embodiments of the invention provide a kind of implementation method, media control server and wheel of broadcasting channel of taking turns to broadcast channel system at taking turns the more single problem of content type of broadcasting channel in the prior art.
As shown in Figure 1, be a kind of implementation method of broadcasting channel of taking turns of the present invention, comprise:
Step 11, media control server are obtained the play start time of next program and the type of described next program; Wherein, the type of the play start time of next program and described next program can be obtained according to the program displaying schedule.
In the such scheme, media control server is carried out the switching of program according to the type of current program and the type of described next program, therefore can realize the switching between the different program categories, makes that the type of broadcast program is abundanter.
Optionally, described a kind of implementation method of broadcasting channel of taking turns also comprises:
Below describe another embodiment that takes turns the implementation method of broadcasting channel of the present invention, comprising:
Step 21, media control server are obtained the play start time of next program and the type of described next program;
Step 22, when the type of described current program and next program all is media file, described media control server issues first order to the media store server at described next program place, make described media store server open the media file of described next program in the play start time of described next program, and the media file of described next program is sent to the media distribution service device.
Step 23, described media control server issues second order to the media store server at described current program place, makes described media store server close the media file of described current program.
Wherein, when the media store server at the media store server at next program place and current program place when being same, first order and second is ordered to may be incorporated in the order and is sent.
Below describe another embodiment that takes turns the implementation method of broadcasting channel of the present invention, comprising:
Step 31, media control server are obtained the play start time of next program and the type of described next program;
Step 32, when the type of described current program is the direct broadcast band program, when the type of described next program is media file, described media control server issues first order to the media store server at described next program place, make described media store server open the media file of described next program, and send to the media distribution service device;
Step 33, described media control server issues second order to the live code stream Distributor at described current program place, makes described live code stream Distributor stop to send to described media distribution service device the direct broadcast band program of described current program.
Below describe another embodiment that takes turns the implementation method of broadcasting channel of the present invention, comprising:
Step 41, media control server are obtained the play start time of next program and the type of described next program;
Step 42, when the type of described current program is media file, when the type of described next program was the direct broadcast band program, described media control server checked whether the channel state of described next program is normal, if normal, carried out next step;
Step 43, described media control server issues first order to the live code stream Distributor at described next program place, makes described live code stream Distributor that the direct broadcast band program of described next program is sent to the media distribution service device;
Step 44, described media control server issues the order of source of media closing of a file to the media store server at described current program place, makes described media store server close the media file of described current program.
Below describe another embodiment that takes turns the implementation method of broadcasting channel of the present invention, comprising:
Step 51, media control server are obtained the play start time of next program and the type of described next program;
Step 52, when the type of described current program and described next program all was the direct broadcast band program, described media control server checked whether the channel state of described next program is normal, if normal, carried out next step;
Step 53, described media control server sends first order to the live code stream Distributor at described next program place, makes the live code stream Distributor at described next program place send the direct broadcast band program of described next program to the media distribution service device;
Step 54, described media control server sends second order to the live code stream Distributor at described current program place, makes the live code stream Distributor at described current program place stop to send to described media distribution service device the direct broadcast band program of described current program.
When the live code stream Distributor at the live code stream Distributor at described next program place and current program place when being same, first order and second is ordered and can be sent in an order.
As shown in Figure 2, be the described media control server 60 of the embodiment of the invention, comprise:
Acquiring unit 61 is used for obtaining the play start time of next program and the type of described next program;
Optionally, described media control server 60 can also comprise:
Optionally, described media control server 60 can also comprise: releasing unit 64, be used for the type according to current program, and discharge current program.
When the type of described next program is media file, described switch unit 62 is specially: the media store server to described next program place issues first order, make described media store server open the media file of described next program in the play start time of described next program, and the media file of described next program is sent to the media distribution service device.
When the type of described next program is the direct broadcast band program, described switch unit 62 is specially: described media control server issues second order to the live code stream Distributor at described next program place, makes described live code stream Distributor that the direct broadcast band program of described next program is sent to the media distribution service device.
When the type of described current program is media file, described releasing unit 64 is specially: described media control server issues the 3rd order to the media store server at described current program place, makes described media store server close the media file of described current program.
When the type of described current program is the direct broadcast band program, described releasing unit 64 is specially: described media control server issues the 4th order to the live code stream Distributor at described current program place, makes described live code stream Distributor stop to send to described media distribution service device the direct broadcast band program of described current program.
As shown in Figure 3, broadcast channel system for described a kind of wheel of the embodiment of the invention, comprising: media control server 60, media store server 30, media distribution service device 40, live code stream Distributor 50;
When the type of described next program is media file, described media control server 60 issues first order to the media store server at described next program place, make described media store server 30 open the media file of described next program in the play start time of described next program, and the media file of described next program is sent to described media distribution service device 40;
When the type of described next program is the direct broadcast band program, described media control server 60 issues second order to the live code stream Distributor at described next program place, makes described live code stream Distributor 50 that the direct broadcast band program of described next program is sent to described media distribution service device 40.
Application scenarios of the present invention is below described.
The present invention can realize switching between the broadcast programs dissimilar in the IPTV system, satisfy to play the requirement of multiple different content file, and can guarantee that ageing strong program plays immediately.The combination that can exist playback of media files and channel to play in the program displaying schedule, switching comprises first file to the switching of second file, and file is to the switching of channel, and channel is to the switching of file, and first channel is to the switching of second channel.Guarantee the seamless switching between program, and correctly discharged the related resource that previous program takies.
As shown in Figure 4, be the structure chart of stream media service system in this application scene, comprising:
Medium positioning service device is used for issuing the program displaying schedule;
Media control server is used for accepting program displaying schedule, sending controling instruction, and the programs stored displaying schedule;
Media store server is used for the operation media file, transmits code stream;
The media distribution service device is used for the distribution code stream to the user;
Live code stream Distributor is used for receiving and transmitting the direct broadcast band code stream.
In this application scenarios, live code stream Distributor sends to the media distribution service device by media store server, the invention is not restricted to this, and additive method can be arranged, for example, live code stream Distributor directly sends to the media distribution service device with the code stream of direct broadcast band.
The implementation method of broadcasting channel of taking turns of the present invention comprises:
Step 1, wheel is broadcast channel creation and is handled, after media control server, media store server, media distribution service device, live code stream Distributor start successfully, media control server issues control command to media distribution service device, media store server, to open media store server sends media channel from code stream to the media distribution service device, passage adopts disconnected socket mode, as udp (User DatagramProtocol, User Datagram Protoco (UDP)), raw socket etc.Media control server issues control command to the media store forwarding server again, to open the code stream of organizing that reads the acquiescence played file, utilizes above-mentioned media channel that code stream is sent to the media distribution service device.
Wherein, the wheel of step 1 is broadcast specific implementation method that channel creation handles as shown in Figure 5, comprising:
After above-mentioned steps completed successfully, wheel was broadcast the channel creation success.
Step 2, the managing programm displaying schedule.
Wherein, medium positioning service device is finished editor and is issued the program displaying schedule.The program displaying schedule can have many to play program plan, plan information comprises: broadcast program VCDN ID (Video ContentDelivery Network ID, video content delivery network sign), content ID, play start time, playing duration etc., edit successfully after, be handed down to media control server.The interface that the program displaying schedule is set in the medium positioning service device comprises: program displaying schedule numbering, and wheel is broadcast channel coding and many field data of scheduling information is arranged, and each field data of scheduling information has VCDN ID, content ID, play start time, playing duration.Media control server can be obtained detailed program content information and program category according to VCDN ID, content ID.Set up the program displaying schedule, the program displaying schedule is issued to media control server.
Media control server is stored after receiving the program displaying schedule;
Media control server regularly reads the program displaying schedule of storage, and whether check in the future has program to need to play in the certain hour, if having, according to the play start time of this program absolute timer is set, and timing arrives, switching flow that will the beginning program.
Wherein, the specific implementation method of the managing programm displaying schedule of step 2 comprises as shown in Figure 6:
Whether step 83, media control server regularly read the program displaying schedule, and the play start time that checks every program displaying schedule is in the future certain hour.If there is such program displaying schedule, then with the program play start time absolute timer is set, after the time arrives, trigger the broadcast program switching flow.
Above-mentioned steps finished the program displaying schedule editor, issue, store, thereby and detect to trigger program and switch.
Step 3, broadcast program switches.
According to broadcast program VCDN ID, content ID Query Database, can get access to this broadcast program type.According to the program category of present broadcast and the program category that will play, have first file to second file, file is to direct broadcast band, direct broadcast band is to file, first direct broadcast band is to several switching modes of second direct broadcast band, wherein VOD, TVOD belong to document form, and direct broadcast band belongs to the channel form.
As shown in Figure 7, for program among the present invention switch in first file to the second file switching flow figure.
Step 91, media control server issue to media store server and revise the source of media file command, and media store server is opened second file.
Step 92, media store server are closed first file.
Step 93, media store server read second file, organize code stream to utilize opened media channel to send to the media distribution service device.
Above-mentioned steps is finished first file to the program switching of second file, suitable wheel is broadcast channel program and is switched TVOD program, TVOD program from the VOD program and switch to VOD program, VOD program and switch to the situation that VOD program or TVOD program switch to the TVOD program, wherein the program of TVOD is the program after the filing, plays with the form of VOD program.
As shown in Figure 8, for program among the present invention switch in file to the switching flow figure of direct broadcast band.
Above-mentioned steps is finished file to the switching of direct broadcast band type, and suitable wheel is broadcast channel program switches to programme televised live from TVOD or VOD program situation.
As shown in Figure 9, for program among the present invention switch in direct broadcast band to the switching flow figure of file.
Above-mentioned steps is finished programme televised live and is switched to file type, and suitable wheel is broadcast channel program from the programme televised live to TVOD or the VOD program switches.
As shown in figure 10, for program among the present invention switch in first programme televised live to the switching flow figure of second programme televised live.
Step 121, media control server check whether the channel state of second programme televised live is normal, if normal, then carry out next step.
Step 122, media control server are sent out a channel command to the media code circulation that media store server, live code stream Distributor issue the live code stream Distributor of closing second programme televised live and media store server respectively.After ordering successfully processing, the live code stream of first programme televised live no longer is forwarded to media store server.That is to say that media control server issues the closing passage control command to live code stream Distributor, media store server, the live code stream Distributor of closing the first channel place sends the media channel of live code stream to media store server.
Step 123, media control server issue the live code stream Distributor of opening second programme televised live to media store server, live code stream Distributor respectively and send out channel command to the media code circulation of media store server.Order successfully handle after, the live code stream of second programme televised live is forwarded to media store server, media store server will receive the media channel that code stream uses the media distribution service device, be forwarded to the media distribution service device.That is to say, media control server issues to live code stream Distributor, media store server and opens channel control command, the live code stream Distributor of opening the second channel place sends the media channel of live code stream to media store server, and media store server is forwarded to the media distribution service device with the live code stream of second channel.
Above-mentioned steps is finished first programme televised live to the type switching of second programme televised live, and suitable wheel is broadcast channel program and switched from the programme televised live to the programme televised live.
In the scheme of the present invention, the type of described current program comprises media file, direct broadcast band program; The type of described next program comprises media file, direct broadcast band program.Described media file comprises: be stored in video request program (VOD) content in the file system, telecast demanding (TVOD) content of filing, real-time code stream with direct broadcast band, it is the real-time code stream of certain channel, as the real-time code stream of in progress certain section of intercutting CCTV-1, or their combination.
Described method embodiment is corresponding with described device embodiment, the description of relevant portion gets final product among the part comparable device embodiment that does not describe in detail in method embodiment, and the description of relevant portion gets final product among the part reference method embodiment that does not describe in detail in device embodiment.
One of ordinary skill in the art will appreciate that, realize that all or part of step in above-described embodiment method is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, this program is when carrying out, comprise the step as above-mentioned method embodiment, described storage medium, as: magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
In each method embodiment of the present invention; the sequence number of described each step can not be used for limiting the sequencing of each step; for those of ordinary skills, under the prerequisite of not paying creative work, the priority of each step is changed also within protection scope of the present invention.
The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a wheel is broadcast the implementation method of channel, it is characterized in that, comprising:
Media control server is obtained the play start time of next program and the type of described next program, and the type of described program comprises media file, direct broadcast band program;
Described media control server when the play start time of described next program arrives, is carried out the switching of program according to the type of described next program;
When the type of described next program is media file, described media control server is according to the type of described next program, when the play start time of described next program arrives, the step of carrying out the switching of program is: described media control server issues first order to the media store server at described next program place, make described media store server open the media file of described next program in the play start time of described next program, and the media file of described next program is sent to the media distribution service device;
When the type of described next program is the direct broadcast band program, described media control server is according to the type of described next program, when the play start time of described next program arrives, the step of carrying out the switching of program is: described media control server issues second order to the live code stream Distributor at described next program place, makes described live code stream Distributor that the direct broadcast band program of described next program is sent to the media distribution service device.
2. the implementation method of broadcasting channel of taking turns according to claim 1, it is characterized in that described media control server is according to the type of described next program, when the play start time of described next program arrives, carry out also comprising before the step of switching of program:
Described media control server checks whether the channel state of described next program is normal.
3. the implementation method of broadcasting channel of taking turns according to claim 1 is characterized in that, also comprises:
Described media control server discharges current program according to the type of current program.
4. the implementation method of broadcasting channel of taking turns according to claim 1 is characterized in that, when the type of described current program was media file, described media control server was according to the type of current program, and the step that discharges current program is:
Described media control server issues the 3rd order to the media store server at described current program place, makes described media store server close the media file of described current program.
5. the implementation method of broadcasting channel of taking turns according to claim 1 is characterized in that, when the type of described current program was the direct broadcast band program, described media control server was according to the type of current program, and the step that discharges current program is:
Described media control server issues the 4th order to the live code stream Distributor at described current program place, makes described live code stream Distributor stop to send to described media distribution service device the direct broadcast band program of described current program.
6. a media control server is characterized in that, comprising:
Acquiring unit is used for obtaining the play start time of next program and the type of described next program, and the type of described program comprises media file, direct broadcast band program;
Switch unit is used for the type according to described next program, when the play start time of described next program arrives, carries out the switching of program;
Described switch unit is specially: when the type of described next program is media file, media store server to described next program place issues first order, make described media store server open the media file of described next program in the play start time of described next program, and the media file of described next program is sent to the media distribution service device; When the type of described next program is the direct broadcast band program, live code stream Distributor to described next program place issues second order, makes described live code stream Distributor that the direct broadcast band program of described next program is sent to the media distribution service device.
7. media control server according to claim 6 is characterized in that, also comprises:
Releasing unit is used for the type according to current program, discharges current program.
8. a wheel is broadcast channel system, it is characterized in that, comprising: media control server, media store server, live code stream Distributor and media distribution service device;
When the type of described next program is media file, described media control server issues first order to the media store server at described next program place, make described media store server open the media file of described next program in the play start time of described next program, and the media file of described next program is sent to described media distribution service device;
When the type of described next program is the direct broadcast band program, described media control server issues second order to the live code stream Distributor at described next program place, makes described live code stream Distributor that the direct broadcast band program of described next program is sent to described media distribution service device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910090581 CN101635827B (en) | 2009-08-27 | 2009-08-27 | Method for realizing carousel channels, media control server and carousel channel system |
| PCT/CN2010/074686 WO2011023034A1 (en) | 2009-08-27 | 2010-06-29 | Method for implementing near video on demand (nvod) channel, media control server and nvod channel system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910090581 CN101635827B (en) | 2009-08-27 | 2009-08-27 | Method for realizing carousel channels, media control server and carousel channel system |
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| Publication Number | Publication Date |
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| CN101635827A CN101635827A (en) | 2010-01-27 |
| CN101635827B true CN101635827B (en) | 2013-09-11 |
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| CN 200910090581 Active CN101635827B (en) | 2009-08-27 | 2009-08-27 | Method for realizing carousel channels, media control server and carousel channel system |
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| CN (1) | CN101635827B (en) |
| WO (1) | WO2011023034A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635827B (en) * | 2009-08-27 | 2013-09-11 | 中兴通讯股份有限公司 | Method for realizing carousel channels, media control server and carousel channel system |
| CN103686407A (en) * | 2013-12-04 | 2014-03-26 | 乐视网信息技术（北京）股份有限公司 | Method and system for alternate broadcast watermark display |
| CN105721954B (en) * | 2016-01-29 | 2019-10-18 | 北京奇艺世纪科技有限公司 | A kind of video carousel system and method |
| CN109348285B (en) * | 2018-11-30 | 2021-06-01 | 青岛海信传媒网络技术有限公司 | Channel switching method and device |
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| WO2011023034A1 (en) | 2011-03-03 |
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